/**
 * @param {number[]} nums
 * @param {number} target
 * @return {number[]}
 */
var twoSum = function(nums, target) {
  let result = []
  for (let i = 0; i < nums.length; i++) {
      for (let j = i + 1; j < nums.length; j++) {
          if (nums[i] + nums[j] === target) {
              result.push(i)
              result.push(j)
          }
      }
  }
  return result
};

console.log(twoSum([2,7,11,15], 9))